See my reply to myself.... but I'll leave this here as a model of what not to do. *blush*
Is this a bug or is it not documented properly?
Documentation for Gmtime() says:
The daylight savings time flag ("$dst") will be "-1" if this
information is not available on your system, "0" for no daylight
savings time (i.e., winter time) and "1" when daylight savings
time is in effect.
This isn't clear: if it means "dst is in effect NOW on your system", then it accurately depicts what happens when you try this code:
use Date::Calc qw (:all);
$summer_time = Mktime (2012, 7, 3, 1, 48, 0);
$winter_time = Mktime (2012, 12, 3, 1, 48, 0);
($year,$month,$day, $hour,$min,$sec, $doy,$dow,$dst)
= Gmtime ($summer_time);
print "Summer: $year,$month,$day,$hour,$min,$sec,$doy,$dow,$dst\n";
= Gmtime ($winter_time);
print "Winter: $year,$month,$day,$hour,$min,$sec,$doy,$dow,$dst\n";
Note the last $dst value in each list returned is always 0. My guess is that if I wait about 6 months and try again, it will always return 1.
What I was hoping for was a flag that was set based on the time requested, as apparently all the other fields in the input portray.
I mean, what good would it do if I asked for Gmtime ($winter_time) and it returned the current year instead of the year I asked for? :)
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